Oil burner



May 6 1924. 1,493,328

' w. DURFEE, JR OIL BURNER Filed Jan. 124 1922 2 Sheets-Sheet 1 i INVEN iok DuEFEE (/E.

I ATTORNEYS WITNESSES w. DURFEE, JR

May 6 1924.

OIL BURNER Filed Jan 12. 19 22 2 Sheets-Sheqts nvmvron MLLIHMDUPFEEL/E man/ms WITNESSES Patented May 6, 1924.

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WILLIAM DUB-FEE, JR., OF FALL RIVER, MASSACHUSETTS, ASSIGNOR TO HYDRO CAR- BON BURNER MANUFACTURING COMPANY, OF NEWPORT, RHODE ISLAND, A COB- PORATION OF RHO'DE ISLAND.

01L Bun-nan.

Application filed January 12, 1922. Serial No. 528,616. a

T 0 all whom it may concern:

Beit known that 1, WILLIAM DURrEE,'Jr., a citizen of the United States, and a resident of Fall River, in the county of Bristol and State of Massachusetts, have invented a new and Improved Oil Burner, of which the following is a full, clear, and exact description.

This invention relates to an oil burning device wherein either light or heavy oil may be used and properly atomized to readily combine with air when discharged so as to afford complete combustion. V

The object in view is to provide a construction wherein oil is broken up or emulsified previous to its discharge in a finely divided state.

Another object of the invention is to provide a burner in which a burner nozzle is provided formed tospray the liquid as it is discharged and finely divide the same whereby it may readily combine with the air.

A still further object, more specifically, is to provide a burner with a plurality .of stirring and agitating means for the oil'pre- .vious to its discharge.

In the accompanying drawings Figure 1 is a plan view of a burner and certain associated devices as they appear when in use, part of the structure being shown in section.

Figure 2 is an enlarged horizontal section through the shaft and nozzle shown in Figure 1.

Figure 3 is a transverse sectional view through Figure 2 on line 33, the same being on an enlarged scale. v

Figure t is a sectional View through Figure 2 on line 4:-4:, the same being on an enlarged scale.

Figure 5 is a sectional view through Figure 2 on line 55, the same being on an enlarged scale.

Referring to the accompanying drawings by numeral, 1 indicates any suitable form of support which carries an electric motor 2 designed to drive a hollow shaft 3 through a pinion land agear 5, said gear being secured to the shaft 6 coupled to the armature shaft of the motor 2. It .will be noted .that the gear wheel 5 is of greater diameter than the pinion 4 whereby the shaft 3 will rotate at the desired speed While the armature of motor 2 will turn over at a less speed.

In burners of the kind shown, it has been The burner embodying the invention is intended to burn any kind of oil and particularly to burn heavy oil. This oil is forced from any suitable supply through the pipe 7 and suitable connecting pipe 8 to the sunply head or can 9, which cap is preferably threaded onto the extension 10 of the plate 11. The parts are arranged to present a packing box 12 whereby there will be a good tight fitting but the shaft 3 is permitted to rotatewhile the head 9 is held stationary. Oil passing into the head 9 will be engaged by the teeth 13 formed on the end of shaft 3 though if desired formed independent and the oil with these teeth will cause the oil to be churned and in a certain sense emulsified.

After the oil passes the teeth it enters the bore 14 of the shaft 3 and in its passage through this bore engages the diagonally positioned pins 15 and 16. Thesepins act as a double bladed propeller-set at an angle to churn or agitate the oil and in that manner break it up somewhat. This action reduces the thickness of the oil so that it flows more rigidly secured thereto. The engagement of the parts are rotated at a high rate of speed,

the oil as it is discharged will move by centrifugal force against the inner wall 20 of the nozzle 17 and travel along its inner wall until it strikes the internally toothed ring 21. The teeth 22 of this ring are inclined in one direction as shown in Figure 2 while the teeth 23 of the ring 24 are ining discharge of oil clined inthe opposite direction. The degree of inclination of these teeth may vary according to circumstances, said arrangement of teeth being provided in order to divide up or thin out the oil. At this stage, air is mixed somewhat with the oil and a lightemulsified oil is discharged in a circular sheet from the end 25 of the nozzle 17. In view of centrifugal action, the oil would normally spread out and in fact leave the end 25 almost at right angles to the axis of the nozzle 17 if air was not discharged out the opening 26. A circular or rather tubular sheet of air is discharged through opening 26 which strikes the flarand not only thoroughly mixes therewith but causes the oil to discharge into a long and comparatively narrow cone. The shape of this cone may be varied by moving the end edge 27 of the air bowl 28 toward and from the edge 25. It will be noted that this bowl is provided with a comparatively large chamber 29 in which airv accumulates whereby an even discharge of air is provided for the opening 26. Air for the bowl 28 may be provided or supplied from any suitable source but it has been found convenient toprovide a fan 30 of any desired or preferred structure which will force air through the opening 31 in the fan casing 32 and from thence through the tubular bracket 33 into the chamber 29. It will be noted that the bowl 28 is threaded onto the tubular bracket 33 and may be easily shifted back and forth longitudinally of said bracket. By the construction and arrangement described, either heavy or light'oils may be freely used and the burner started with cold oil.

During the operation of the device, the pipe 3 will become warm by reason of friction and also by proximity to the burning fuel so that a substantially perfect combustion is secured. The stirring or mixing members connected or associated with the pipe 3 and the nozzle 17 thoroughly divide or break up the oil as the oil is given a rotary and centrifugal movement. This dividing or beating of the oil causes the same to quickly and easily mix with the air especially as the air and oil in this state engage each other while in rapid motion. It will thus be seen that the discharge of the device is really a combustible gas rather than an oil spray.

What I claim is 1. In a burner of the character described, a rotatable hollow shaft, and a plurality of stirring means positioned in spaced re lation to one another within said shaft ineeasas termediate the ends for passing therethrough.

2. In a'burner of the character described, a rotatable shaft formed with means at one end for violently stirring oil as it passes into the shaft, and means at spaced intervals in the shaft for violently stirring oil as the oil passes through the shaft, said means comprising spaced and inclined members extending across'the shaft, the members being inclined in opposite direction.

3. In an oil burner of the character described, a nozzle, a perforated plate near one end for dividing the oil passing there through into a plurality of independent streams, and stirring members arranged between said plate and the end of the nozzle for breaking up said streams.

4:- In an oil burner of the character described, a nozzle provided with a plate having a plurality of apertures for dividing streams of oil passing through the nozzle, and a'plurality of spaced means arranged on one side of said plate for mixing the various streams of oil passing through said apertures, said spaced means comprising a plurality of internally toothed rings arranged in the inner wall of said nozzle.

5. In a burner of the character described, a nozzle through which oil is to be discharged, and a plurality of internally toothed ring members arranged in said nozzle and secured thereto so as to rotate therewith for violently mixing or agitatingthe oil as it passes through the nozzle.

6. A nozzle for oil burners comprising a hollow body having a perforated plate arranged therein, and secured thereto so as to revolve therewith, and a plurality of "revolvable internally toothed ring members rigidly secured to said body spaced apart and spaced from said perforated plate.

7 In a burner of the character described, an oil shaft, means associated with said shaft for breaking up oil entering said shaft and passing therethrough, means for discharging oil into said shaft at one end, means for rapidly rotating saidshaft, a nozzle rigidly secured to said shaft and rotated thereby, a member in said nozzle for dividing the oil into a plurality of streams, and toothed members arranged adjacent the first mentioned member to beat and finely divide the oil immediately previous to its discharge from the nozzle, and means for directing a substantially tubular sheet of air over the end of the nozzle, said tubular sheet of air having its axis coincident to the axis of said shaft.

' WILLIAM DURFEE, JR.

violently stirring oil 

